Analisis Pengaruh Variasi Rasio Pelarut Penyusun CsPbBr3 Pada Polyachrilontirile Fiber Terhadap Stabilitas Dan Potensi Performa Reduksi CO2

De Yonarosa, Taras Genovievo (2023) Analisis Pengaruh Variasi Rasio Pelarut Penyusun CsPbBr3 Pada Polyachrilontirile Fiber Terhadap Stabilitas Dan Potensi Performa Reduksi CO2. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Peningkatan kadar CO2 di udara menjadi salah satu penyebab pemanasan global. Fotoreduksi CO2 dan Carbon Capture Storage (CCS) adalah salah satu solusi potensial untuk menangkap, mengurangi serta merubah emisi CO2 menjadi bahan kimia berguna. Perovskit CsPbBr3 dipilih sebagai fotokatalis semikonduktor untuk reduksi CO2 karena kemampuan dari material yang baik. Namun, perovskite memiliki kekurangan salah satunya stabilitasnya yang buruk terhadap kelembapan dan pelarut polar. Kekurangan ini dapat diatasi oleh polyacrylonitrile fiber (PANF) yang dibentuk dengan metode elektrospinning. Kedua material ini digabungkan menjadi komposit CsPbBr3/PANF. Dalam prosesnya akan terbentuk larutan CsPbBr3/PAN yang akan diubah menjadi serat dengan metode elektrospinning. Akan tetapi larutan ini memiliki viskositas yang tinggi, variasi penambahan pelarut menggunakan acetone digunakan untuk mengurangi viskositas larutan dengan tujuan agar terbentuknya ukuran fiber yang homogen dengan diameter yang kecil. Pengujian XRD, FTIR, dan SEM dilakukan untuk mengetahui berhasil terbentuknya komposit antara CsPbBr3 dan PANF serta mengetahui ukuran fiber dan distribusi CsPbBr3 di dalam PANF. Berdasarkan hasil pengujian tersebut didapatkan berhasil terbentuknya komposit CsPbBr3/PANF yang memiliki kandungan CsPbBr3 terdistribusi secara merata, dengan perbedaan ukuran diameter fiber yang disebabkan oleh pengaruh variasi antara perbandingan toluene dan acetone. Semakin banyak jumlah acetone yang ditambahkan semakin kecil ukuran beads yang terbentuk. Nilai ukuran fiber terkecil dimiliki oleh variasi 4:1 yaitu sebesar 727,56 nm. Pengujian BET menunjukkan bahwa penambahan kandungan CsPbBr3 di dalam PAN menunjukkan perubahan surface area dari 11,357 m2/g menjadi 12,363 m2/g, sehingga penambahan CsPbBr3 dapat dikatakan tidak memiliki dampak yang signifikan terhadap kemampuan fiber. Selanjutnya dilakukan uji potensi performa reduksi CO2 dengan melakukan uji stabilitas dengan instrumen PL spectroscopy dan uji reduksi CO2 dengan FTIR. Variasi dengan penurunan intensitas PL terkecil yaitu sebesar 66,67% dimiliki oleh variasi 4:1. Selanjutnya dilakukan uji potensi fotoreduksi CO2, penelitian ini berhasil mereduksi CO2 dan H2O yang ditandai munculnya puncak serapan O-H, C-O, C=O pada uji FTIR yang dilakukan.
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Increasing levels of CO2 in the air is one of the causes of global warming. CO2 photoreduction and Carbon Capture Storage (CCS) are potential solutions to capture, reduce and convert CO2 emissions into useful chemicals. Perovskite CsPbBr3 was chosen as a semiconductor photocatalyst for CO2 reduction due to its good material properties. However, perovskite has drawbacks, one of which is poor stability against moisture and polar solvents. This deficiency can be overcome by polyacrylonitrile fiber (PANF) formed by electrospinning method. These two materials are combined into a CsPbBr3/PANF composite. In the process a CsPbBr3/PAN solution will be formed which will be converted into fiber by the electrospinning method. However, this solution has a high viscosity, variations in the addition of solvent using acetone are used to reduce the viscosity of the solution with the aim of forming a homogeneous fiber size with a small diameter. XRD, FTIR, and SEM tests were carried out to determine the successful formation of the composite between CsPbBr3 and PANF and to determine the fiber size and distribution of CsPbBr3 in PANF. Based on the test results, it was found that the CsPbBr3/PANF composite was successfully formed which had CsPbBr3 content evenly distributed, with differences in fiber diameter size caused by the influence of variations between the ratio of toluene and acetone. The more the amount of acetone added the smaller the size of the beads that are formed. The smallest fiber size value is owned by the 4:1 variation, which is 727.56 nm. BET testing showed that the addition of CsPbBr3 content in PAN showed a change in surface area from 11,357 m2/g to 12,363 m2/g, so that the addition of CsPbBr3 could be said to have no significant impact on fiber performance. Next, a potential CO2 reduction performance test was carried out by carrying out a stability test with PL spectroscopy instruments and a CO2 reduction test with FTIR. The variation with the smallest decrease in PL intensity, namely 66.67%, is owned by the 4:1 variation. Furthermore, a CO2 photoreduction potential test was carried out. This study succeeded in reducing CO2 and H2O which was marked by the appearance of O-H, C-O, C=O absorption peaks in the FTIR test conducted.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Fotoreduksi CO2 , Perovskit CsPbBr3, Polyacrylonitrile, Elektrospinning, CO2 Photoreduction, Perovskite CsPbBr3, Polyacrylonitrile, Electrospinning
Subjects:	T Technology > TP Chemical technology > TP1140 Polymers T Technology > TP Chemical technology > TP159.M4 Membranes (Technology) T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles. T Technology > TP Chemical technology > TP248.25.M45 Membrane reactors
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Yonarosa Taras Genovievo De
Date Deposited:	24 Jul 2023 07:11
Last Modified:	24 Jul 2023 07:11
URI:	http://repository.its.ac.id/id/eprint/99135

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